A Visit to Smullyan

Raymond Smullyan 2012I visited Raymond Smullyan on my way home from Penn State. We went for lunch at Selena’s Diner. What do two mathematicians do during lunch? Exchange magic tricks and jokes, of course. Here is a story Raymond told me:

Raymond: What is the date?
Stranger: I do not know.
Raymond: But you have a newspaper in your pocket!
Stranger: It’s no use. It’s yesterday’s.


One Comment

  1. Jason Polak:

    Haha, this is great. I still remember reading Smullyan’s “First Order Logic” as one of the textbooks for my undergraduate logic course, and his many puzzles on knights and knaves in “Forever Undecided” :)